One astronomer believes that the density of the universe rem…

One astronomer believes that the density of the universe remains constant. One physicist believes that the density of the universe changes over a period of time. Which of these statements best explains why the astronomer and physicist have different views on the density of the universe? (2 points)

One biologist believes that the dinosaurs were destroyed by…

One biologist believes that the dinosaurs were destroyed by floods. One astronomer believes that comets and meteorites which struck Earth made dinosaurs extinct. Which of these statements best explains why the biologist and astronomer have different views about dinosaurs? (2 points)